refactor: extract RingGraph, StatsRingGraph, MacroBreakdown components

Consolidate 6 duplicated instances of the SVG arc ring pattern into a
composable component hierarchy: RingGraph (base ring), StatsRingGraph
(ring with target markers), and MacroBreakdown (3 rings + kcal + detail
table). Removes ~400 lines of duplicated SVG/CSS from FoodSearch,
nutrition page, meals page, stats page, food detail page, and recipe
NutritionSummary.

package.json

@@ -1,6 +1,6 @@
 {
 	"name": "homepage",
-	"version": "1.17.0",
+	"version": "1.17.1",
 	"private": true,
 	"type": "module",
 	"scripts": {